CN112014947A - High-pixel small-volume optical system and camera module applying same - Google Patents
High-pixel small-volume optical system and camera module applying same Download PDFInfo
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Abstract
The embodiment of the invention discloses a high-pixel small-volume optical system, which sequentially comprises the following components from an object plane to an image plane along an optical axis: first to ninth lenses; the object plane sides of the first lens and the second lens are convex surfaces, the image plane sides of the first lens and the second lens are concave surfaces, and the focal power of the first lens and the focal power of the second lens are negative; the object plane sides of the third lens and the sixth lens are convex surfaces, and the focal powers of the third lens and the sixth lens are positive; the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative; the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive; the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive; the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative; the object plane side of the ninth lens is a concave surface, and the focal power of the ninth lens is negative. On the other hand, the embodiment of the invention also provides a camera module. The embodiment of the invention mainly comprises 9 lenses, and has the advantages of reasonable number of lenses, ingenious structure, small volume and light weight.
Description
The technical field is as follows:
the invention relates to an optical system and a camera module applied by the same, in particular to a high-pixel small-volume optical system and a camera module applied by the same.
Background art:
with the wider application of high resolution technology, especially the wide application of high pixel lenses, a series of similar lens products appear in the market, but the similar lens products have the defects of more lenses, large volume, small target surface and insufficient pixels.
The invention content is as follows:
in order to overcome the problems of a large number of lenses and a large volume of the conventional high-pixel lens product, the embodiment of the invention provides a high-pixel small-volume optical system on the one hand.
A high-pixel small-volume optical system sequentially comprises the following components from an object plane to an image plane along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens;
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object plane side of the third lens is a convex surface, and the focal power of the third lens is positive;
the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the object plane side of the ninth lens is a concave surface, and the focal power of the ninth lens is negative.
On the other hand, the embodiment of the invention also provides a camera module.
A camera module at least comprises an optical lens, and the high-pixel small-volume optical system is installed in the optical lens.
The optical system and the camera module of the embodiment of the invention mainly comprise 9 lenses, the number of the lenses is reasonable, the structure is ingenious, and the advantages of small volume and light weight are achieved; different lenses are combined with each other and the focal power is reasonably distributed, so that the lens has good performances of 4800 ten thousand high pixels, a large target surface and the like, and is suitable for the fields of motion cameras, unmanned aerial vehicles and the like.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a lens optical system or a camera module according to an embodiment of the present invention;
FIG. 2 is a graph of MTF transfer function of an embodiment of a lens system or camera module of the present invention;
FIG. 3 is a diagram of relative illumination of a lens system or camera module according to an embodiment of the present invention;
FIG. 4 is a second schematic structural diagram of an embodiment of a lens optical system or a camera module according to the invention;
FIG. 5 is a third schematic structural diagram of an embodiment of a lens system or a camera module according to the present invention;
FIG. 6 is a fourth schematic structural diagram of an embodiment of a lens system or a camera module according to the present invention;
FIG. 7 is a fifth schematic structural diagram of an embodiment of a lens system or a camera module according to the present invention;
FIG. 8 is a sixth schematic structural view of an embodiment of a lens system or camera module of the present invention;
FIG. 9 is a seventh schematic structural diagram of an embodiment of a lens system or a camera module according to the present invention;
fig. 10 is a schematic structural diagram eight of the lens optical system or the camera module according to the embodiment of the invention.
The specific implementation mode is as follows:
in order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the words are used for distinguishing between them unless the context clearly dictates otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A high-pixel small-volume optical system sequentially comprises the following components from an object plane to an image plane along an optical axis: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, and a ninth lens 9.
The object surface side of the first lens 1 is a convex surface, the image surface side is a concave surface, and the focal power is negative;
the object surface side of the second lens 2 is a convex surface, the image surface side is a concave surface, and the focal power is negative;
the object plane side of the third lens 3 is a convex surface, and the focal power thereof is positive;
the image surface side of the fourth lens 4 is a concave surface, and the focal power thereof is negative;
the image plane side of the fifth lens 5 is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens 6 is a convex surface, and the focal power thereof is positive;
the seventh lens element 7 has a convex object surface side and a convex image surface side, and has positive refractive power;
the object plane side of the eighth lens element 8 is a concave surface, the image plane side is a convex surface, and the focal power thereof is negative;
the object plane side of the ninth lens 9 is a concave surface, and the power thereof is negative.
The optical system of the embodiment of the invention mainly comprises 9 lenses, has reasonable number of lenses and smart structure, and has the advantages of small volume and light weight; different lenses are combined with each other and the focal power is reasonably distributed, so that the lens has good performances of 4800 ten thousand high pixels, a large target surface and the like, and is suitable for the fields of motion cameras, unmanned aerial vehicles and the like.
Further, as another preferred embodiment of the present invention, without limitation, as shown in figure 1,
the object surface side of the first lens 1 is a convex surface, the image surface side is a concave surface, and the focal power is negative;
the object surface side of the second lens 2 is a convex surface, the image surface side is a concave surface, and the focal power is negative;
the object surface side of the third lens 3 is a convex surface, the image surface side is a convex surface, and the focal power is positive;
the object plane side of the fourth lens 4 is a convex surface, the image plane side is a concave surface, and the focal power is negative;
the fifth lens 5 has a concave object surface side and a convex image surface side, and has positive focal power;
the object surface side of the sixth lens element 6 is a convex surface, the image surface side is a convex surface, and the focal power thereof is positive;
the seventh lens element 7 has a convex object surface side and a convex image surface side, and has positive refractive power;
the object plane side of the eighth lens element 8 is a concave surface, the image plane side is a convex surface, and the focal power thereof is negative;
the ninth lens element 9 has a concave object surface side and a concave image surface side, and has negative refractive power.
Further, as another preferred embodiment of the present invention, without limitation, as shown in figure 4,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a plane, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a convex surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the image surface side of the fifth lens is a concave surface, the image surface side is a convex surface, and the focal power of the fifth lens is positive;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a concave image surface side, and has negative refractive power.
Still further, as another preferred embodiment of the present invention, without limitation, as shown in figure 5,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side of the third lens is a concave surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a convex surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the object surface side of the fifth lens is a concave surface, the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a concave image surface side, and has negative refractive power.
Further, as another preferred embodiment of the present invention, without limitation, as shown in figure 6,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a concave surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the object surface side of the fifth lens is a concave surface, the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a concave image surface side, and has negative refractive power.
Still further, as another preferred embodiment of the present invention, without limitation, as shown in figure 7,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a concave surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the object surface side of the fifth lens is a convex surface, the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a concave image surface side, and has negative refractive power.
Still further, as another preferred embodiment of the present invention, without limitation, as shown in figure 8,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a convex surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the object surface side of the fifth lens is a convex surface, the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a convex image surface side, and has negative refractive power.
Further, as another preferred embodiment of the present invention, without limitation, as shown in figure 9,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a concave surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the object surface side of the fifth lens is a concave surface, the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens is a convex surface, the image plane side of the sixth lens is a concave surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a concave image surface side, and has negative refractive power.
Still further, as another preferred embodiment of the present invention, without limitation, as shown in figure 10,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a convex surface, the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the object surface side of the fifth lens is a concave surface, the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens is a convex surface, the image plane side of the sixth lens is a concave surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the ninth lens element has a concave object surface side and a convex image surface side, and has negative refractive power.
Further, as another preferred embodiment of the present invention, not limited thereto, the seventh lens and the eighth lens are cemented with each other to form a combined lens. Simple structure, compact volume can guarantee good optical performance.
Still further, as another preferred embodiment of the present invention, without limiting the same, each lens of the optical system satisfies the following condition:
(1)-0.52<f/f1<-0.21；
(2)-0.35<f/f2<-0.19；
(3)0.13<f/f3<0.22；
(4)-0.20<f/f4<-0.08；
(5)0.18<f/f5<0.09；
(6)0.33<f/f6<0.67；
(7)-0.028<f/f78<0；
(8)-0.43<f/f9<-0.12；
wherein f is a focal length of the entire optical system, f1 is a focal length of the first lens, f2 is a focal length of the second lens, f3 is a focal length of the third lens, f4 is a focal length of the fourth lens, f5 is a focal length of the fifth lens, f6 is a focal length of the sixth lens, f78 is a focal length of a combined lens formed by the seventh lens and the eighth lens which are cemented together, and f9 is a focal length of the 9 th lens. Different lenses are combined with each other and the focal power is reasonably distributed, so that the lens has good performances of 4800 ten thousand high pixels, a large target surface and the like.
Further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd1 of the material, the abbe constant Vd1 of the material, the focal length f1 of the first lens 1 and the focal length f of the optical system satisfy: nd1 is more than 1.88, Vd1 is less than 42, and-0.52 is less than f/f1< -0.21. Simple structure and can ensure good optical performance.
Still further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd2 of the material of the second lens 2, the abbe constant Vd2 of the material, the focal length f2 of the material, and the focal length f of the optical system satisfy: nd 2< 1.63, Vd2 > 63, -0.35< f/f2< -0.19. Simple structure and can ensure good optical performance.
Still further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd3 of the material of the third lens 3, the abbe constant Vd3 of the material, the focal length f3 of the third lens, and the focal length f of the optical system satisfy: nd3 is more than 2.0, Vd3 is less than 28, 0.13 is less than f/f3 is less than 0.22. Simple structure and can ensure good optical performance.
Further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd4 of the material, the abbe constant Vd4 of the material, the focal length f4 of the fourth lens 4 and the focal length f of the optical system satisfy: nd4 is more than 1.90, Vd4 is less than 24, and-0.20 is less than f/f4< -0.08. Simple structure and can ensure good optical performance.
Still further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd5 of the material, the abbe constant Vd5 of the material, the focal length f5 of the fifth lens 5 and the focal length f of the optical system satisfy: nd 5< 1.50, Vd5 > 80, 0.18< f/f5< 0.09. Simple structure and can ensure good optical performance.
Still further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd6 of the material of the sixth lens 6, the abbe constant Vd6 of the material, the focal length f6 of the sixth lens, and the focal length f of the optical system satisfy: nd 6< 1.62, Vd6 > 63, 0.33< f/f6< 0.67. Simple structure and can ensure good optical performance.
Further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd7 of the material and the abbe constant Vd7 of the seventh lens 7 satisfy: nd7 is less than 1.60, and Vd7 is more than 68; the refractive index Nd8 of the material and the Abbe constant Vd8 of the eighth lens 8 satisfy the following conditions: nd8 is more than 2.0, Vd8 is less than 28; the focal length f78 of the combined lens formed by the seventh lens and the eighth lens after being cemented meets the following requirement between the focal length f78 of the optical system and the focal length f of the optical system: -0.028< f/f78 <0. The structure is simple and compact, and good optical performance can be ensured.
Still further, as another preferred embodiment of the present invention, but not limited thereto, the refractive index Nd9 of the material, the abbe constant Vd9 of the material, the focal length f9 of the ninth lens 9, and the focal length f of the optical system satisfy: nd 9< 1.62, Vd9 > 63, -0.43< f/f9< -0.12. Simple structure and can ensure good optical performance.
Still further, as another preferred embodiment of the present invention, not limited thereto, the aperture stop 10 is located between the sixth lens 6 and the seventh lens 7, near the seventh lens side. For adjusting the intensity of the light beam.
Further, as another preferred embodiment of the present invention, not limited thereto, the second lens 2, the fifth lens 5, the sixth lens 6, and the ninth lens 9 are glass aspherical lenses. The long-term reliability requirement and the service life of the lens can be ensured, and the lens has the traditional advantages of small volume, low cost, easy processing and the like.
Further, as a preferred embodiment of the present invention, without limitation, the effective focal length f of the optical system is 2.96mm, the vertical field angle DFOV is 150 °, and the total optical length TTL is 26 mm. Specifically, the basic parameters of the optical system are shown in the following table:
in the above table, S1, S2 correspond to two surfaces of the first lens 1 from the object plane to the image plane 11 along the optical axis; s3, S4 correspond to both surfaces of the second lens 2; s5, S6 correspond to both surfaces of the third lens 3; s7, S8 correspond to both surfaces of the fourth lens 4; s9, S10 correspond to both surfaces of the fifth lens 5; s11, S12 correspond to both surfaces of the sixth lens 6; STO is the position of the diaphragm 10; s14, S15 correspond to both surfaces of the seventh lens 7; s15, S16 correspond to both surfaces of the eighth lens 8; s17, S18 correspond to both surfaces of the ninth lens 9; s19 denotes the image plane 11.
Further, as a preferred embodiment of the present invention, the second lens 2, the fifth lens 5, the sixth lens 6, and the ninth lens 9 are glass aspherical lenses, but not limited thereto. It satisfies the following equation:
wherein, the parameter c is 1/R, namely the curvature corresponding to the radius, and y is the radiusThe unit of the orientation coordinate is the same as the unit of the length of the lens, k is the coefficient of the conic section, a1To a8The coefficients are respectively corresponding to the radial coordinates. The aspheric correlation values of the second lens 2, the fifth lens 5, the sixth lens 6 and the ninth lens 9 are shown in the following table:
| K | α1 | α2 | α3 | α4 | α5 | α6 | α7 | |
| S3 | 14.00 | 0 | 3.2E-03 | -4.5E-04 | 3.8E-05 | -2.2E-06 | 7.5E-08 | -1.4E-09 |
| S4 | -1.00 | 0 | 5.1E-03 | -4.7E-04 | 3.7E-05 | -9.1E-07 | -7.0E-08 | -4.4 |
| S9 | ||||||||
| 0 | 0 | 1.4E-03 | -7.8E-05 | 1.1E-05 | -1.4E-06 | 7.2E-08 | -1.6E-09 | |
| S10 | 1.00 | 0 | -3.8E-04 | 1.2E-04 | -2.2E-05 | -1.8E-06 | -7.6E-08 | -1.8E-09 |
| S11 | -1.18 | 0 | 8.1E-05 | -2.3E-06 | -1.3E-05 | -3.0E-06 | 2.8E-07 | -2.2 |
| S12 | ||||||||
| 0 | 0 | -1.6E-03 | -2.7E-04 | -1.8E-05 | -2.7E-07 | 5.5E-07 | -5.6 | |
| S17 | ||||||||
| 0 | 0 | -7.9E-03 | 1.3E-03 | -4.1E-04 | -1.1E-04 | -2.2E-05 | -2.4E-06 | |
| |
0 | 0 | -5.4E-03 | -3.0E-04 | 1.8E-04 | -3.5E-05 | 3.6E-06 | -1.9E-07 |
as can be seen from fig. 2 to 3, the optical system of the present embodiment has good performance of 4800 pixels, large target surface, etc.
A camera module at least comprises an optical lens, and the high-pixel small-volume optical system is installed in the optical lens.
The camera module of the embodiment of the invention mainly comprises 9 lenses, has reasonable number of lenses and smart structure, and has the advantages of small volume and light weight; different lenses are combined with each other and the focal power is reasonably distributed, so that the lens has good performances of 4800 ten thousand high pixels, a large target surface and the like, and is suitable for the fields of motion cameras, unmanned aerial vehicles and the like.
The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the practice of the invention to the particular forms disclosed. Similar or identical methods, structures and the like as those of the present invention or several technical deductions or substitutions made on the premise of the conception of the present invention should be considered as the protection scope of the present invention.
Claims (10)
1. A high-pixel small-volume optical system sequentially comprises the following components from an object plane to an image plane along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens; it is characterized in that the preparation method is characterized in that,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object plane side of the third lens is a convex surface, and the focal power of the third lens is positive;
the image surface side of the fourth lens is a concave surface, and the focal power of the fourth lens is negative;
the image surface side of the fifth lens is a convex surface, and the focal power of the fifth lens is positive;
the object plane side of the sixth lens is a convex surface, and the focal power of the sixth lens is positive;
the object surface side of the seventh lens is a convex surface, the image surface side of the seventh lens is a convex surface, and the focal power of the seventh lens is positive;
the object plane side of the eighth lens is a concave surface, the image plane side of the eighth lens is a convex surface, and the focal power of the eighth lens is negative;
the object plane side of the ninth lens is a concave surface, and the focal power of the ninth lens is negative.
2. A high pixel, low volume optical system as claimed in claim 1, wherein the seventh lens and the eighth lens are cemented to each other to form a combined lens.
3. A high pixel small volume optical system as claimed in claim 1, wherein each lens of the optical system satisfies the following condition:
(1)-0.52<f/f1<-0.21；
(2)-0.35<f/f2<-0.19；
(3)0.13<f/f3<0.22；
(4)-0.20<f/f4<-0.08；
(5)0.18<f/f5<0.09；
(6)0.33<f/f6<0.67；
(7)-0.028<f/f78<0；
(8)-0.43<f/f9<-0.12；
wherein f is a focal length of the entire optical system, f1 is a focal length of the first lens, f2 is a focal length of the second lens, f3 is a focal length of the third lens, f4 is a focal length of the fourth lens, f5 is a focal length of the fifth lens, f6 is a focal length of the sixth lens, f78 is a focal length of a combined lens formed by the seventh lens and the eighth lens which are cemented together, and f9 is a focal length of the 9 th lens.
4. A high pixel small volume optical system as claimed in any one of claims 1 to 3, wherein the refractive index Nd1 of the material of the first lens, the abbe constant Vd1 of the material, the focal length f1 of the material and the focal length f of the optical system satisfy: nd1 is more than 1.88, Vd1 is less than 42, and-0.52 is less than f/f1< -0.21.
5. A high pixel small volume optical system as claimed in any one of claims 1 to 3, wherein the refractive index Nd2 of the material of the second lens, the abbe constant Vd2 of the material, the focal length f2 of the material and the focal length f of the optical system satisfy: nd 2< 1.63, Vd2 > 63, -0.35< f/f2< -0.19.
6. A high pixel small volume optical system as claimed in any one of claims 1 to 3, wherein the refractive index Nd3 of the material, the abbe constant Vd3 of the material, the focal length f3 of the third lens and the focal length f of the optical system satisfy: nd3 is more than 2.0, Vd3 is less than 28, 0.13 is less than f/f3 is less than 0.22.
7. A high pixel small volume optical system as claimed in any one of claims 1 to 3, wherein the refractive index Nd4 of the material, the abbe constant Vd4 of the material, the focal length f4 of the fourth lens and the focal length f of the optical system satisfy: nd4 is more than 1.90, Vd4 is less than 24, and-0.20 is less than f/f4< -0.08.
8. A high pixel small volume optical system as claimed in any one of claims 1 to 3, wherein the refractive index Nd5 of the material, the abbe constant Vd5 of the material, the focal length f5 of the fifth lens and the focal length f of the optical system satisfy: nd 5< 1.50, Vd5 > 80, 0.18< f/f5< 0.09.
9. A high pixel small volume optical system as claimed in any one of claims 1 to 3, wherein the refractive index Nd6 of the material, the abbe constant Vd6 of the material, the focal length f6 of the sixth lens and the focal length f of the optical system satisfy: nd 6< 1.62, Vd6 > 63, 0.33< f/f6< 0.67; and/or
The refractive index Nd7 of the material and the Abbe constant Vd7 of the material of the seventh lens satisfy the following conditions: nd7 is less than 1.60, and Vd7 is more than 68; the refractive index Nd8 of the material of the eighth lens and the Abbe constant Vd8 of the material satisfy that: nd8 is more than 2.0, Vd8 is less than 28; the focal length f78 of the combined lens formed by the seventh lens and the eighth lens after being cemented meets the following requirement between the focal length f78 of the optical system and the focal length f of the optical system: -0.028< f/f78< 0; and/or
The refractive index Nd9 of the material, the Abbe constant Vd9 of the material, the focal length f9 of the ninth lens and the focal length f of the optical system satisfy the following conditions: nd 9< 1.62, Vd9 > 63, -0.43< f/f9< -0.12.
10. A camera module comprising at least an optical lens, wherein the optical lens is provided with a high-pixel and small-volume optical system as claimed in any one of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI835058B (en) * | 2022-01-12 | 2024-03-11 | 大陸商玉晶光電（廈門）有限公司 | Optical imaging lens |
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| TWI835058B (en) * | 2022-01-12 | 2024-03-11 | 大陸商玉晶光電（廈門）有限公司 | Optical imaging lens |
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